WHOA This isn't what I expected.


I'll try to make this as brief as possible. I am bi-amping my setup because of the new speakers I am getting. I am initially keeping my old integrated amp (Mac MA-6500)to use with the mid/high speakers. I borrrowed/bought a Nakamichi PA-7 from a friend to try out with the bass speakers. The Mac can be used as a preamp for the Nak.

I don't have the new speakers yet, but was dicking around with my old speakers this morning. I wanted to see what the volume level difference was between the Mac and Nak. I connected the Nak to the Mac using fairly good interconnects (Audioquest Pythons)and used my existing speakers and speaker cables (Audioquest Volcanos)and connected them to the Nak. After listening for a while, I reminded myself of why I was getting new speakers. Then I connected the speaker cables to the Mac, and as expected, the volume did decrease slightly. BUT, the sound quality increased in everyway and was immediately noticed. The Nak did not hold a candle to the old amp, and in fact it sounded pretty pathetic.

Can anyone tell me if this should have been the anticipated result? Or do you think something could be wrong with the Nak amp? What else am I missing? Power cords? I don't know, other than there was a VERY big drop off in sound quality that I sure wasn't expecting.

Thanks for any input.
angiemima
I remember seeing a PA-7 sitting on a used shelf at a store I worked at.It looked like a million bucks sitting there.Built like a tank.I opened it up and thought the layout was a little messy.With krell gear and counter point gear looking like the layout meant something.Then I fired it up one slow night.I ran it with a Marantz 67se and used the Micro Mcormack headphone drive as a preamp.Back then B&W had the "P" series and we had P5's in the store.I hooked it all up and wow did it sound like crap.So I swapped a B&K ST-140,just to see if something was up.I now use three B&K ST-140's in my hometheater system as a six ch. system.Someone bought it because it looked great.No, I didn't sell it.
This is yet another "McINTOSH RULES"thread.

there are lots f really well regarded amps out there. there are are a lot more die-hard MCIntosh fans around here
I picked up a PA-7 cheap a few years ago. It makes a pretty good subwoofer amp (its current use), but I don't like it as a full range amp. It might work on the bass section of your new speakers.

As for durability, I know a guy who used one for years to drive a pair of Apogee Duetta Signature speakers, so I guess they have some stamina.
IN 1988 I was at a dealer in Mpls looking and the subject came up about the PA5 and PA7.He said they sounded wimpy.That of course is/was 1 mans opinion.I never heard them myself.A lawyer would probably call this heresay.I say trust your ears to be sure of anything.Good luck,Bob
I owned a Nak PA 7 for 15 years; one of the first ones and until recently I sold it. I used it with B&W 801 SII speakers and it sound okay. But I did not pay $$$$$$ for it. I can say one thing for sure: I hads no problems with it--not like my Mark Levinson that had to have caps replaced with 2 years--so who has the better quality?